AClaude Sonnet 5API

Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work.

1MContext window · tokens

$2Input price · per M tokens

$10Output price · per M tokens

AnthropicProvider

Prices update automatically — checked daily against provider list prices.

$4 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
cheaper than 28% of the 226 commercial models tracked here
10 of 30 Anthropic models tracked here, from cheapest

See open-source alternatives → Compare all model prices

Benchmarks & performance

Independent benchmark scores for Claude Sonnet 5, measured by Artificial Analysis. Higher is better. Measurement mode: Xhigh.

Humanity's Last Exam39%

Long Context Reasoning76.7%

SciCode54.1%

💰 Blended price$4 / 1M tokens

Benchmark data by Artificial Analysis

About this model

Claude Sonnet 5 is a commercial AI model by Anthropic. The specifications below are tracked automatically: pricing is refreshed daily from public list prices, so the numbers on this page reflect the current cost of using the model through its API.

Frequently asked questions

What is Claude Sonnet 5?

Claude Sonnet 5 is an AI language model from Anthropic. It is a proprietary model, available through an API.

Is Claude Sonnet 5 free?

Claude Sonnet 5 is not free: it costs $2 per million input tokens and $10 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.

What is Claude Sonnet 5 good at?

Independent benchmarks from Artificial Analysis give it Humanity's Last Exam 39%, Long Context Reasoning 76.7%, SciCode 54.1%.